wget https://pypi.mirrors.ustc.edu.cn/packages/9a/74/de4d8c69466b6413b1616048b39f8b73d65f98c15f6202b68ccfc9550f1f/setuptools-58.0.4.tar.gz
tar -zxvf setuptools-58.0.4.tar.gz
cd setuptools-58.0.4
sudo python setup.py install

wget https://pypi.mirrors.ustc.edu.cn/packages/52/e1/06c018197d8151383f66ebf6979d951995cf495629fc54149491f5d157d0/pip-21.2.4.tar.gz
tar -zxvf pip-21.2.4.tar.gz
cd pip-21.2.4
sudo python setup.py install

pip3 install watchdog